Progress on the superconducting undulator for ANKA and on the instrumentation for R&D

Superconducting undulators show a larger magnetic field strength for the same gap and period length, as compared to permanent magnet devices, which allows to generate X-ray beams of higher brilliance and with harder spectrum. The worldwide first short period length superconducting undulator is in op...

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Bibliographic Details
Published in:Proceedings of the 10th International Conference 2009-10, Vol.1234, p.33-36
Main Authors: Casalbuoni, Sara, Baumbach, Tilo, Grau, Andreas, Hagelstein, Michael, Saez De Jauregui, David, Boffo, Cristian, Borlein, Markus, Walter, Wolfgang, Magerl, Andreas, Mashkina, Elena, Vassiljev, Nikita
Format: Article
Language:English
Subjects:
Beams (radiation)
Beams (structural)
Coils
Construction
Devices
High resolution
Instrumentation
Light sources
Magnetic fields
Nanocomposites
Nanomaterials
Nanostructure
Permanent magnets
Phase error
R Research and development
Scattering
Specifications
Strength
Superconductivity
Synchrotrons
Tasks
X-rays
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Summary:Superconducting undulators show a larger magnetic field strength for the same gap and period length, as compared to permanent magnet devices, which allows to generate X-ray beams of higher brilliance and with harder spectrum. The worldwide first short period length superconducting undulator is in operation since 2005 at the synchrotron light source ANKA in Karlsruhe [1]. To further drive the development in this field a research and development program is being carried out. In this contribution we report on the last progress of the construction of a 1.5 m long superconducting undulator with a period length of 15 mm, planned to be installed in ANKA beginning 2010 to be the light source of the new beamline NANO for high resolution X-ray scattering. The key specifications of the system are an undulator parameter K higher than 2 (with a magnetic gap of 5 mm) and a phase error smaller than 3.5 degrees. Cryocoolers will keep the coils at 4.2 K for a beam heat load of 4 W. The ongoing R&D includes improvements in understanding of the magnetic field properties and of the beam heat load mechanisms. The tools and instruments under development to fulfill these tasks are also discussed.
ISSN:0094-243X